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When Catholic couples experience trouble getting pregnant, they often seek medical help and begin to research what options are available to them.
A number of moral considerations and questions generally emerge during this process: Why are techniques like in vitro fertilization (IVF) considered immoral? What approaches will the Church allow us to try? What does our infertility mean, spiritually and personally, in the face of our fervent but frustrated desire for a baby?
Natural Family Planning (NFP) is an umbrella term for certain methods used to achieve and avoid pregnancies. These methods are based on observation of the naturally occurring signs and symptoms of the fertile and infertile phases of a woman’s menstrual cycle.
NFP is not “Rhythm.” The Rhythm (or Calendar) method was developed in the 1930s. It was based on the scientific theory that ovulation could be predicted by calculating previous menstrual cycles. This method was often inaccurate because it did not take account of the unique nature of each woman’s menstrual cycles.
